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  • 1
    Electronic Resource
    Electronic Resource
    Patterns of intraspecific variation inAntennaria alborosea, A. corymbosa, A. marginata, A. microphylla, A. parvifolia, andA. umbrinella (Asteraceae:Inuleae) (1990)
    Springer
    Plant systematics and evolution 169 (1990), S. 123-150 
    Details
    ISSN: 1615-6110
    Keywords: Angiosperms ; Asteraceae ; Inuleae ; Antennaria ; Geographic variation ; clinal variation ; principal component analysis ; correlation coefficients
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Patterns of intraspecific variation were examined inAntennaria alborosea A. E. Porsild,A. corymbosa E. Nels,A. marginata Greene,A. microphylla Rydb.,A. parvifolia Nutt., andA. umbrinella Rydb. AlthoughA. alborosea was initially considered arctic in distribution, it became apparent that a southern montane element also exists. Our results suggest that morphological differences between arctic and southern montane specimens represent clinal variation. The additional morphological data for specimens that occur more than 1,500 km south of the species' range as it was initially described result in a better understanding of this once presumed arctic taxon. Morphological variation in the dioecious speciesA. corymbosa, A. marginata, A. microphylla, A. parvifolia, andA. umbrinella was greater between the genders than was geographic variation within each gender. These results demonstrate that both pistillate and staminate specimens must be examined in dioecious species ofAntennaria if morphological variation in the respective species is to be fully understood. Character size or number of broadly distributed species (A. microphylla andA. parvifolia) generally decreased with increasing longitude, whereas characters of species with more restricted distributions (A. alborosea, A. corymbosa, andA. marginata) generally increased in size or number with increasing latitude or longitude.Antennaria umbrinella was an exception in this respect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00937672
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  • 2
    Electronic Resource
    Electronic Resource
    The genusAntennaria (Asteraceae: Inuleae) in western North America: Morphometric analysis ofAntennaria alborosea, A. corymbosa, A. marginata, A. microphylla, A. parvifolia, A. rosea, andA. umbrinella (1990)
    Springer
    Plant systematics and evolution 169 (1990), S. 151-175 
    Details
    ISSN: 1615-6110
    Keywords: Angiosperms ; Asteraceae ; Inuleae ; Antennaria alborosea ; A. corymbosa ; A. marginata ; A. microphylla ; A. parvifolia ; A. rosea ; A. umbrinella ; Taxonomy ; multivariate morphometrics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Multivariate analysis of vegetative and reproductive characters was used to examine morphological relatedness amongAntennaria alborosea A. E. Porsild,A. corymbosa E. Nels.,A. marginata Greene,A. microphylla Rydb.,A. parvifolia Nutt.,A. rosea Greene, andA. umbrinella Rydb. Both pistillate and staminate plants were examined. Some of the characters examined were variable in one species, but stable in another (i.e., presence or absence of papillae on the achenes). Our analyses indicate that the seven species are morphologically distinct. It is hypothesized that theA. rosea agamic complex arose through hybridization amongA. corymbosa, A. microphylla, A. umbrinella, and possiblyA. dioica (L.)Gaertn. However, hybridization between the three former species and others, as well as their subsequent morphological responses to different environmental conditions causes confusion in recognizing the taxa.Antennaria angustifolia Rydb.,A. arida E. Nels.,A. confinis Greene,A. scariosa E. Nels.,A. foliacea humilis Rydb.,A. concinna E. Nels., andA. viscidula E. Nels. are considered to represent F 1 hybrids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00937673
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    Paper (German National Licenses)
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